She would be silly to…
She would be silly to purchase anything else. Nothing else right now has the reliability and dependability of a Toyota product. In this case you definitely get what you pay for.
Her Corolla will last 3 to 6 months more. All she has to do is baby it. Just like every other Toyota owner does with their vehicle. The dealership will take her Corolla, they will refresh it and put it back out on the used car lot, sell it and it'll last another 100,000 mi.